<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8" >
	<title>study</title>
	<script type="text/javascript">
	if(navigator.javaEnabled())
	{
		alert("java enable");
	}else{
		alert("no java")
	}
	</script>


</head>
<body>
	
</body>
</html>